Cutting and folding machine



H. E. LEONARD.

CUTTING AND FOLDING MACHINE.

APPLlCATlON FILED APR. 27, 1917.

'1,337,7 78. Patented Apr. 20, 1920.

. UNITED STATES PATENT OFFICE.

HENRY E. LEONARD, OF BROOKLYN, NEW YORK, ASSIGNOR TO 0. B. COTTBELL & SONS COMPANY, OF NEW YORK, N. Y., A. CORPORATION OF DELAWARE,

CUTTING AND FOLDING MACHINE.

Specification of Letters Patent.

Patented Apr.20, 1920.

Application filed April 27, 1917. Serial No. 185,014.

To all whom z'tmay concern:

Be it known that I, HENRY E. LEONARD, a citizen of the United States, and resident of the borough of Brooklyn, in the city and State of New York, have invented a new and useful Improvement in Cutting and Folding Machines, of which the following is a specification.

In cutting and folding machines when run at a high speed it has been found very d fficult, if not impossible, to keep the traveling web from Waving and thus prevent its positive feeding through the cutting mechanism I to the folding mechanism.

My invention is directed to means for preventing. the waving of the web and thus insuring its positive feed and accurate cutting.

My invention consists in means for stiffening the web longitudinally of its travel as, for instance, by bowing the web to prevent its waving action, and means to thereafter flatten out the web.

A practical embodiment of my invention is represented in the accompanying drawings, in wlzZ1l1- Figure l is a detail face view of that part of a cutting andfolding machine which includes my invention,

Fig. 2 is a section taken in the plane of the line IIII of Fig. 1, With the Web omitted,

Fig. 3 is a section taken in the plane of the line IIIIII of Fig. 2,

Fig. 4 is an enlarged section taken transversely through the web at the stiffening means,

plete return of the web to its flat form just Fig. 5 is a similar view taken a distance below the stiffening means showing the gradual return of the web to its fiat form, and,

Fig. 6 is a similar view showing the combefore reaching the folding mechanism.

' The web 1 is passed between the feed rolls 2, 3, to the rotary cutters 4, 5, and from thence downwardly between the members 6, 7,-of the web guide to the rippers 8 of the olding mechantudinally of its travel as it passes from the feed rolls 2, 3, through the cutters toward the rotary carrier 9, is herein shown as comprismg coactmg pairs of overlapping fingers 1 0, 11, earned by the rotary cutters 4, 5, immediately back of the knives 12, 13. There are two pairs of these overlapping fingers shown, a pair being located near each side edge of the traveling web and the two pairs are so arranged that they will impart a considerable bow' to the advance portion of the web longitudinally ofits travel. This will give the web longitudinal stiffness as it passes from the feed rolls 2, 3, through the cutters and for a considerable distance be tween the members 6, 7, of the guide which directs the advance edge of the web to the grippers 8 of the rotary carrier 9.

he member 7 of the guide is herein shown as comprising a pair of diverging guide rods which may be spaced from the member 6, for a considerable distance of the length of the, guide and then gradually brought into close proximity to the member 6 at the lower ends of the guide rods. This will cause the longitudinally bowedweb to be gradually flattened out by the diverging guide rods to its original form to permit its advance edge to be readily grasped by the grippers 8 of the rotary carrier 9.

I have found that this longitudinal stifiening of the web absolutely prevents any wav ing action of the web and thus insures the positive and accurate feeding and .cutting of the web even when the partsare traveling at a very high speed. i

It is evident that changes may be resorted to in the form, construction andarrangement of the several parts without departing fromthe spirit and scope of my invention; hence I do not wish to limit myself strictl to the structure herein shown and ClGSCIlbGf but what I claim is:

1. In a machine of the character described, a pair of rotary cutters'having c0- acting knives for severing sheets from a traveling web and means carried by the out ters for stiffening the web longitudinally of its travel.

2. In a machine of the character de scribed, a pair of rotary cutters having coacting knives for severing sheets from a traveling web and means carried by the cutters for stiffening the web longitudinally of its travel by bowing the web.

3. In a machine of the character described, a pair of rotary cutters having coactin knives for severing sheets from a traveling web, means for stiffening the web longitudinally of its travel and means arranged to act upon the traveling web. to remove its longitudinal stiffness.

4. In a machine of the character described, a pair of coacting cutters for severing sheets from a traveling web, means for stiffening the web longitudinally of its travel, and diverging guide rods arranged to act upon the web to remove its longitudinal stiffness. l 1 4 5. In a machine of the character described, a pair of rotary cutters having coacting knives for severing sheets from a traveling web, means for bowing the web longitudinally to stiffen it, and means arranged to act upon the traveling web to flatten it.

6. In a machine of the character described, a pair of coacting cutters for severing sheets from a traveling web, means for bowin the web longitudinally of its travel to stiffen it, and diverging guide'rods arranged to act upon the web to flatten it.

7. In a machine of the character described, a pair of rotary cutters having coacting knives for severing sheets from a traveling Web, means carried by the cutters for stiffening the web longitudinally of its travel, and means arranged to act uponthe web to remove its longitudinal stiffness.

8. In a machine of the character described, a pair of rotary cutters having coacting knives for severing sheets from a traveling web, means carried by the cutters for stiffening the Web longitudinally of its act upon the web to remove its longitudinal stiffness.

9. In a machine of the character described, a pair of rotary cutters having coactin knives for severing sheets from atraveling web, means carried by the cutters for bowing the web longitudinally of its travel to'stiflen it and means arranged to act upon the web to flatten it.

10. In a machine of the character described, a pair of rotary cutters having coacting knives for severing. sheets from a traveling web, means carried by the cutters for bowing the web longitudmally of its travel to stifien it and diverging guide rods arran ed to act upon the web to flatten it.

11. In a machine of the character described, a cutting mechanism, a folding mechanism, means for bowing the web longitudinally of its travel to stiffen it as it passes through the cutting mechanism to the folding mechanism, and means to flatten the traveling Web as it approaches the folding mechanism.

12. In a machine of the character described, a cutting mechanism, a folding mechanism, means for bowing the web longitudinally of its. travel to stiffen it as it passes through the cutting mechanism to the folding mechanism, and diverging guide rods arranged to act upon the traveling web to' flatten it as it approaches the folding mechanism.

In testimony, that I claim the foregoing as my invention, I have signed my name this 20th day of April 1917 HENRY E. LEONARD. 

